Tony handing out the shoes and trying to lure Thor back with Pop tarts was hilarious. The teams reactions to receiving the shoes and Steve when he saves Tony was so sweet! This story is turning out really great so far.

"They fell silent, and Steve tucked their clasped hand carefully into the blanketed warmth, breathing in the sent that was them."

You asked for spelling mistakes, so here one is. You used "Sent" which is the spelling for sending messages or people or things somewhere. What you probably should have used was "Scent" which is the spelling for a person or creature smelling something.